My has to be...
1. Tengen Toppa Gurren Lagaan
2. Soul Eater

Great animation, great plot.
And in TTGL, the quotes are magnificent. :]

Oh, and least favorite that I've watched is probably Naruto. :c
Don't hate on me because I hate Naruto, mmk?

1) mermaid melody (don't laugh! it's a good anime!)

actually, i don't watch alot of anime, i really mainly read the manga. but, the anime for furuba and kare kano were both really dissapointing.

Ya mermaid melody is awesome!!

i know, right? and the stupid idiots in the anime club @ my school think it's stupid. idiots.

1) Avatar (I know its not really anime, but w/e)
2) Shugo Chara
3) This one that i just found but cant reember its nae

Avatar is great. o:

Lol, yeah.

i have a lot sooo... Hmmmm.... Kay.
1) The Melanchony of Haruhi Suzumiya (not sure if I spelled it right) aka Haruhi Suzumiya no yuutsu
2) Rozen Maiden
3) Rosario + vampire
4) Minabi Straight
5) Minami ke
6) Gakuen Alice Academy
7) Karin
8) Prism Arc
9) Air (eh, not so much)

Lol, like I said, I have a lot. There's more but I don't remember them. XP

And mermaid Melody is really good. I love the songs but I can't watch the whole thing because the last 20 or so episodes are don't have the subs. Plus, Tokyo Mew Mew is pretty good. I used to watch it all the time. Lol. Oh, and I totally agree with you dєυѕ, I really don't like Naruto.

here r my fave animes/mangas:

vampire knight
mermaid melody
rosario+vampire
tokyo mew mew
kamikaze kaito jeanne
mamotte lollipop
kingdom hearts
fruits basket
and more...